Aware Baby and separation anxiety issue

I recently read The Aware Baby and was blown away by it, but I'm having a hard time dealing with an issue that I think is related to separation anxiety. DD has just turned 1 and has always been a very attached baby, especially to me. She accepts and rejects DH in waves, which thankfully he accepts as normal and just part of her process. Her rejection of DH is especially bad right now and I'm having a really difficult time dealing with it.

Every night, DH plays with DD while I take a quick shower; after the shower she and I take a bath together and then go to bed. It is the only time of the day when I'm not primarily caring for DD. We've been doing this for 7 months or so with no problems. Now suddenly she is FREAKING out when I get in the shower. She stands at the tub, holding the shower curtain open and getting sprayed, crying her little heart out the whole time I'm showering. It's awful. She won't let DH come near her, she only wants me.

I don't know how to deal with this situation. When she cries, I like to sit with her and support her in her feelings; she cries until she's done and is happy and relaxed and all is well. But I can't sit with her while I'm in the shower, and she rejects all of DH's attempts to connect with her. I'm feeling a little frustrated because I would really like to bathe and I don't like to do it after she goes to bed because I usually work (I work from home) during that time. She wakes so frequently in the early evening that it's hard to time a shower so that I can attend to her during wakeups (she won't have any of DH at nighttime) AND fit in time for work at the same time.

Thanks if you've made it this far. I just don't know what to do, watching her stand there and cry and cry is just breaking my heart. AND I want to be able to attend to my needs too . . . . Any advice is really appreciated.