jodyjohnson
Adventurer
Tremorsense is actually limited to not cancel advantage for unseen enemies. It just lets you know where stuff is same as is they failed a Hidden check or are not trying to Hide.
Does that mean that if you're human, you can only "smell" in bright light, if you're an elf you can "smell" in dim light, and if you're a dwarf you can "smell" in the dark?
Otherwise you are changing mechanics already, and would be better off explicitly defining it.
The easiest and perhaps most elegant solution is to restrict her blindness to the realm of roleplay. Assume she has some sort of extraordinary sense that fills the role of sight and acts as if it were sight then call it a day.
Imagine an Alert, blind Bladesinger who relies primarily on Sword Burst to do melee damage and Fireball to clear out swarms of enemies. You can't tell me that's not cool.
I saw a case, however, where a player brought such a character to a table that had a real blind person at it, and that person was... well, put off a bit.