Approach a new advisor in addition to existing one
There shouldn't be any issues with this, but people have different personalities. In the best case your current advisor wants what is best for you. You seem to have that opinion of her.
I would open any discussion with another potential advisor as an &quot;exploration&quot; of the possibilities. You are interested in their field and wonder what problems there might be to work on for a degree. If you have your own ideas about a problem, bring them up, surely, and ask for advice. You could mention this to your current advisor first, though it isn't truly necessary. You are early in your studies and it is a good time to be exploring your options.
If both individuals are willing (and able) to advise you it might be good, but having your current advisor just as a support, rather than a formal advisor, is also good.
These sorts of conversations are best done face to face if that can be arranged safely now.