The soon to be released Canon XS/1000 looks to be a promising entry level slash cross over DSLR. It gets you in the DSLR market, but offers the comfort of a P&S for your wife.
Other live view offering makes include Olympus DSLRs (of which I own) This is a a completely different system designed for the digital era. They have a small part of the market as not everyone is sold on the 4/3rds concept. Very economical to buy in, but relatively expensive glass outside the kit lenses and not a huge selection. Having said that, the selection covers the ranges and offers things the others don't. Definitiely deficient in the prime category though.
As previously mentioned, Sony has several intersting models in the A200 and A350 one of which offers an articulating screen, not seen by the entry models of the above mentioned manufactures.
Pentax also makes at least one model with live view, the K20D. I'm not sure if the K200D Has live view or not.
Anyway, just some more suggestions for your research.
Dave