tributes have been paid to a woman described as the "girl with the smile" who was found dead in a children's play area after leaving a house party.Erin Donald, 22, has been remembered as someone who always helped others on a day when her mum raised concerns about the numbers of people suffering with mental health problems.After unexpectedly leaving a party in the early hours of May 29 last year, Erin texted a friend to say "see you soon in heaven".She was a social work student at Liverpool Hope