I have this dumb mental image of an aged Liara, now in her Matriarch stage centuries after the end of the games leading a diplomatic mission into Krogan space. Upon arrival her staff are horrified by a band of Krogan soldiers that meet them at the landing zone led by a grizzled leader. His scales marked by a hundred battles and a demeanor to match, roaring out a 'request' to speak to "the one in charge."
The mood is tense. Krogan space is civilized but along its border bands of renegades, holdouts of the old ways of war aren't uncommon. The mission has a few Asari commandos providing security but they're outnumbered two to one. Should they turn back? Stall for time and try to plan an escape?
Instead, Matriarch T'Soni holds up a hand, calming her staff and without a word, walks down the ship's ramp towards the Krogan completely unarmed, in nothing but her gown, ignoring the cries behind her begging her to come back.
She reaches the band of Krogan warriors, looks the leader up and down and places her hands on her hips.
"Is this anyway to greet your mother, Grunt"?
A tumbleweed passing makes the only sound
The Krogan grins, and scoops Liara into his arms for a hug, lifting her off her feet and spinning her 'round.
"I missed you." He says softly. She pats his shoulder as he places her down again.
"It's good to see you again too Grunt. You've got quite the command here it seems." She feels a smile on her lips as she waves her hand at the Krogan milling about, all trying their best not to stare, just as stunned as the members of the Asari mission.
"Yep. I've got my own brigade now. Aralakh Brigade. Over 2'000 strong. All under my command." His voice rings with pride. Liara nods.
"She'd be proud if she were here you know. Of what you've become Grunt. Following in her footsteps."
Grunt laughs. "She would, wouldn't she"? He doesn't wait for an answer and Liara knows he doesn't need one. They both know the answer. Shepard had taken Grunt in, seen past the tank bred warrior exterior to the boy beneath and had taken him to her side.
When Liara learned of this upon meeting Grunt for the first time on Utukku (Learning her bond mate had an adopted son that she'd never seen fit to mention) she had been surprised, but surprises were something she had grown used to with Shepard.
"Kid just needs a bit of direction Liara. Give him a chance." She could still hear Shepard's voice in her memory reassuring her.
She had been right "on the money" as she was fond of saying.
Liara ran a hand down her front, straightening the folds of her dress as she put back on her 'matron face'. "Well then. We have a schedule to keep. A meeting with the planetary overseer. Would you escort us"? She asked aloud.
Grunt nodded, with a slight twinge in his own voice putting on his 'Commander' voice. "I'd be honored, Matriarch T'Soni." Turning he bellowed out to his troops. "Form up!"
Liara walks back to her staff, almost all with wide eyes at what's unfolded before them. She crosses her arms. "As I recall we have a schedule to keep, do we not?" Breaking the trance they rush to their duties. She turns her back to them, hiding a small smile and watches Grunt form up his troops. The way he orders them into formation reminds her of no one but Shepard, a small piece of her still alive all these years on.
She would be proud.
...
I'm of the option that Femshep is Grunt's adoptive mom, and realized that even if she won't be around forever with Grunt, a romanced Liara certainly would be.