Urgent - visitor visa for immigrant living in Canada

[dsntor]

I am a US citizen and my long-term partner is a Chinese national living in Ontario on a work permit. Having been declined a B-2 visa earlier this year, she has re-applied and will have an interview soon.
When she was interviewed last time she (1) was unable to furnish proof of employment (although she held and still holds a full-time job), and (2) did not obscure any of the facts concerning our relationship and her intent to visit me, on which subject she was extensively questioned. She now has an employment letter from her company, but otherwise the situation remains unchanged.
Given our situation, is there reason to believe she will be denied again? Is it imperative that we have our travel plans locked in and ready to be presented at the interview? If anyone has specific advice to offer, it would be greatly appreciated!

[peace999]

'Travel plans' is a trivial issue and not mandatory. The most important consideration for a visitor visa is the intent to return home.
When your partner presented the purpose as visiting her US citizen boyfriend , the likelihood of her marrying you and settling in US, in the officer's assessment is not remote.
She has already shown migratory potential by moving from China to Canada.

It is very likely that she will be denied again , since her purpose is the same. But in the end, the officer's discretion prevails.

If denied, you should consider visa options that encompass your long term goals together. Eg. Work visa, spousal visa ( if you guys plan to get married).