Two themes run throughout everything that follows, up until April 2008. First- she can't let go of Travis, but IMO it is a huge oversimplification to term what she felt "obsession." Second, she is survival mode throughout- in desperate financial straits, but utterly incapable/unwilling to dig herself out. She is a parasite in search of a host.
Skipping ahead through fall and winter of 2007- I've already posted long summaries of everything that happened in those months.
By the end of January 2008 she is equally desperate on both fronts. Not even whatever whenever sex is working to make Travis heel to her command. He in fact has told her he really wants her to leave, to go back to Yreka.
In any case, Travis is having such serious financial difficulties of his own that he no longer is the optimal host to rescue her financially.
Both of these realities infuriate her, as does the insult of Travis returning again and again to Lisa.
By mid-February financial imperatives force her to concentrate on lining up her next host. She gets busy on LDS link up and starts "dating." A lot. She even considers Gus Searcy for a short while, but she isn't willing to settle anymore for anyone other than a replacement Travis. Rich AND young, and....trusting.
Time is not on her side, unfortunately for her. Travis is still helping her out financially here and there- he pays for her share of the electricity bill at her rental house, for example, but he can't and won't do much more than that, and she can't line up anyone fast enough to make it possible to stay in Mesa much longer.
Then comes March through the first week in April. I'll post the whole enchilada later, the blow by blow, because it is IMO a really pivotal time.