If she had points to equal free nights it would be easier, as she could just transfer points to your account & you could make the reservation under your name/status. If they're certificates (Chase, etc), then technically the Gold status/bennies (or lack there of) would apply. You can show proof of your Titanium status at check-in & ask politely if they'll allow free breakfast or lounge access. The property is not required to do so, though. I believe SNAs can only be used for your reservations, not someone else's.
Cheers.