Depends on how strongly you feel about her. If you really truly like her tell her, let her know and it'll feel good for you.
But consider the implications, it could just put a burden on the two of you and trust me when I say nothing breaks your heart more than the right person at the wrong time.
I would only risk such a thing if I truly believe, in a sort of 'meant to be' sorta way. I wouldn't do it, save my heart to heal now instead of breaking t later but maybe you would prefer to enjoy these 4 months together. Idk